Josh Dersch
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cbcfd2b47e
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Minor bugfixes, introduced a new timing infrastructure and moved DiskController over to it. Minor performance improvements; now running at 110% speed. Display timing is still too slow.
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2015-11-17 16:09:50 -08:00 |
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Josh Dersch
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e1c90dbe01
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Fixed bug in carry flag on SUB operations; SUBLZ X,X now works correctly. Alto now appears to boot successfully. Skeleton of Display hardware added.
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2015-11-09 17:36:26 -08:00 |
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Josh Dersch
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c0f23685b1
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Fixed instruction register decoding SFs for Emulator Task; first stab at handling (most) DNS<- operations including setting SKIP and CARRY flip flops. BLT now succeeds, Nova code in bootstrap is running.
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2015-10-29 17:02:22 -07:00 |
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Josh Dersch
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24d7a5a8fe
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Work begun on Disk controller, stubs for keyboard and a few bugfixes and tweaks.
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2015-09-04 18:03:47 -07:00 |
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Josh Dersch
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59d98d1909
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Refinement to CPU, implemented very rough diassembler and began annotation of official Xerox ucode sources with PROM addresses.
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2015-08-28 18:07:59 -07:00 |
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Josh Dersch
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9c3ee3afac
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Tweaks to ALU, CPU, Memory
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2015-08-21 17:12:28 -07:00 |
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Josh Dersch
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f1ffcb0547
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Implemented ALU, most of Memory state machine.
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2015-08-20 18:02:01 -07:00 |
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Josh Dersch
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3b77ba875d
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Sketching in the rest of the CPU
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2015-08-19 16:50:40 -07:00 |
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Josh Dersch
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6193189b10
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Basic skeleton, ucode loading.
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2015-08-19 13:35:56 -07:00 |
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